org.openide.util

It is guaranteed that if you are a writer you can also enter the mutex as a reader.

Note that there is no checkedListByFilter method currently. If constant-time operation is important (e.g.

Also this exception can easily be located in source code.

There are several use cases for RequestProcessor:

• Having something done asynchronously in some other thread, not insisting on any kind of serialization of the requests: Use RequestProcessor. RequestProcessor.getDefault . RequestProcessor.post(java.lang.Runnable) post(runnable) for this purpose.
• Having something done later in some other thread: Use RequestProcessor. RequestProcessor.getDefault . RequestProcessor.post(java.lang.Runnable,int) post(runnable, delay)
• Having something done periodically in any thread: Use the RequestProcessor.Task 's ability to RequestProcessor.Task.schedule schedule() , like

   static RequestProcessor.Task CLEANER = RequestProcessor.getDefault().post(runnable,DELAY);
   public void run() {
   doTheWork();
   CLEANER.schedule(DELAY);
   }
   

  Note: Please think twice before implementing some periodic background activity.

1. Created.

• The event source object
• The observer - object that wants to listen on source
• The listener - the implementation of the corresponding *Listener interface, sometimes the observer itself but often some observer's inner class delegating the events to the observer.
• The weak listener implementation.